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Side by Side Diff: Source/WebCore/platform/audio/Biquad.cpp

Issue 7745029: Merge 92408 - Make sure that AudioArray is 16-byte aligned (Closed) Base URL: http://svn.webkit.org/repository/webkit/branches/chromium/835/
Patch Set: Created 9 years, 4 months ago
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1 /* 1 /*
2 * Copyright (C) 2010 Google Inc. All rights reserved. 2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 7 *
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
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41 #endif 41 #endif
42 42
43 namespace WebCore { 43 namespace WebCore {
44 44
45 const int kBufferSize = 1024; 45 const int kBufferSize = 1024;
46 46
47 Biquad::Biquad() 47 Biquad::Biquad()
48 { 48 {
49 #if OS(DARWIN) 49 #if OS(DARWIN)
50 // Allocate two samples more for filter history 50 // Allocate two samples more for filter history
51 m_inputBuffer.resize(kBufferSize + 2); 51 m_inputBuffer.allocate(kBufferSize + 2);
52 m_outputBuffer.resize(kBufferSize + 2); 52 m_outputBuffer.allocate(kBufferSize + 2);
53 #endif 53 #endif
54 54
55 // Initialize as pass-thru (straight-wire, no filter effect) 55 // Initialize as pass-thru (straight-wire, no filter effect)
56 m_b0 = 1; 56 m_b0 = 1;
57 m_b1 = 0; 57 m_b1 = 0;
58 m_b2 = 0; 58 m_b2 = 0;
59 m_a1 = 0; 59 m_a1 = 0;
60 m_a2 = 0; 60 m_a2 = 0;
61 61
62 reset(); // clear filter memory 62 reset(); // clear filter memory
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369 369
370 void Biquad::setAllpassPole(const Complex &pole) 370 void Biquad::setAllpassPole(const Complex &pole)
371 { 371 {
372 Complex zero = Complex(1, 0) / pole; 372 Complex zero = Complex(1, 0) / pole;
373 setZeroPolePairs(zero, pole); 373 setZeroPolePairs(zero, pole);
374 } 374 }
375 375
376 } // namespace WebCore 376 } // namespace WebCore
377 377
378 #endif // ENABLE(WEB_AUDIO) 378 #endif // ENABLE(WEB_AUDIO)
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